diff --git a/tests/server-images-bodyless-content-length.test.ts b/tests/server-images-bodyless-content-length.test.ts
new file mode 100644
index 000000000..cb2e8d9dd
--- /dev/null
+++ b/tests/server-images-bodyless-content-length.test.ts
@@ -0,0 +1,14 @@
+import { expect, test } from "bun:test";
+import { IMAGES_RESPONSE_MAX_BYTES, readImageResponseBytes } from "../src/server/images";
+
+test("bodyless 304 ignores representation Content-Length when enforcing image response size", async () => {
+  const response = new Response(null, {
+    status: 304,
+    headers: { "content-length": String(IMAGES_RESPONSE_MAX_BYTES + 1) },
+  });
+
+  const observed = await readImageResponseBytes(response);
+
+  expect(observed.oversized).toBe(false);
+  expect(observed.bytes.byteLength).toBe(0);
+});